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采用红外气体分析仪,于2008年10月17—19日连续3个昼夜原位监测了荷木的树干CO2释放通量、树干温度、木质部液流密度和CO2浓度。结果表明:树干CO2释放通量(EA)日变化呈S形曲线,不同径级间差异显著。EA与树干温度呈显著幂函数关系(0.24
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